Awakingdemi Frequency Counter Tester, Radio Frequency Counter, High Accuracy RF 1-500MHz Frequency Counter Tester Measurement Meter for Ham Radio Simple construction--This Frequency Counter Tester is with simple construction, compact design and easy to carry. Standard interface-- for easy connections for other tests or antennas. Wide range: 1-500MHz, the maximum frequency is 640MHz, 100Hz resolution. Special control chip with high accuracy. 0802 LCD display, the digits can be seen directly and clearly.